摘要
提出一种具有少量缓存结构的预测GBN-HARQ算法,该算法适用于TDD时分复用的慢衰落系统。由于时分复用系统发送端可以获取信道信息,用该信息来预测数据帧在信道中的传送。但预测不准会影响系统性能,因此在接收端增加N/2个缓存器,其中N指的是环路延时,以减少预测不准带来的损失。新算法在保持原GBN-HARQ算法复杂度基本不变的情况下提高了吞吐率,增益大部分情况下为4dB。
A predicted repeat GBN HARQ algorithm with several buffers was presented, which suits for slowly fading TDD system since the transmitter can achieve the channel state information. The scheme used CSI to predict whether the data was transmitted successfully or not, then retransmit those may be lost possibly. The presented algorithm increased N/2 buffers to lessen the loss suffers from error predict. Simulation results verify that the scheme improves the throughput efficiency： the gain is about 4dB at most cases.
出处
《通信学报》
EI
CSCD
北大核心
2005年第12期24-29,共6页
Journal on Communications
基金
国家自然科学基金资助项目(60372099)
